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Title: US4053576: System for obtaining hydrogen and oxygen from water using solar energy
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Country: US United States of America

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7 pages

 
Inventor: Fletcher, Edward A.; Minneapolis, MN

Assignee: The Regents of the University of Minnesota, Minneapolis, MN
other patents from UNIVERSITY OF MINNESOTA, THE REGENTS OF (599740) (approx. 772)
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Published / Filed: 1977-10-11 / 1975-05-19

Application Number: US1975000578404

IPC Code: Advanced: C01B 3/04; C01B 13/02;
Core: C01B 3/00; more...
IPC-7: C01B 13/00;

ECLA Code: C01B3/04B2; C01B13/02B2;

U.S. Class: Current: 423/579; 126/684; 422/186; 423/658.2;
Original: 423/579; 023/252.R; 023/260; 423/648.R;

Field of Search: 203/DIG. 1 202/234 159/1.5 023/252 R,260 423/648,579

Priority Number:
1975-05-19  US1975000578404

Abstract: A system for producing and separating hydrogen and oxygen from water in which water is pumped through a preferentially permeable walled vessel heated to a high temperature by a solar energy concentrator. The water dissociates at high temperatures. Lower molecular weight components, especially hydrogen, diffuse preferentially through the vessel walls and are drawn off and separated. Oxygen may be separated from the products which do not diffuse through the walls by conventional separation techniques. A system is provided for making use of solar energy to produce storable fuels for use during periods of no sunshine.

Attorney, Agent or Firm: Burd, Braddock & Bartz ;

Primary / Asst. Examiners: Vertiz, O. R.; Langel, Wayne A.

Family: None

First Claim:
Show all 14 claims
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:     1. Apparatus for obtaining hydrogen and oxygen from water utilizing solar energy, said apparatus comprising:
  • A. a water-dissociation chamber having a wall preferentially permeable to the passage of lower molecular weight dissociation components including hydrogen,
  • B. means connected to the dissociation chamber for supplying water to said chamber,
  • C. solar energy concentrating means focused on said dissociation chamber for heating said chamber to a temperature at which water is dissociated into steam, molecular hydrogen, molecular oxygen, atomic hydrogen, atomic oxygen and hydroxyl,
  • D. means connected to the dissociation chamber for withdrawing oxygen enriched dissociation products from said chamber,
  • E. a non-permeable casing spaced from and enclosing said dissociation chamber wall and forming a hydrogen enriched dissociation product collection chamber,
  • F. means connected to said collection chamber for withdrawing hydrogen enriched dissociation product from said chamber,
  • G. cooling means for cooling said oxygen enriched dissociation products and partially liquefying the same, and
  • H. gas-liquid separation means for separating gaseous oxygen from the cooled oxygen enriched dissociation products.


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Forward References: Show 16 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (16)   |   Backward references (4)   |   Citation Link

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PDF
Patent  Pub.Date  Inventor Assignee   Title
Buy PDF- 7pp US2760920  1956-08 Olsen   Solar energy coking apparatus
Buy PDF- 7pp US2803591  1957-08 Coanda et al.   Apparatus for purification of undrinkable water
Buy PDF- 5pp US3300393  1967-01 Fisher   Saline spray distillation within rotating solar heater
Buy PDF- 4pp US3901669  1975-08 Seitzer  Sun Ventures, Inc. Manufacture of hydrogen from high temperature steam
       
Foreign References:
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Publication Date IPC Code Assignee   Title
  JP45014404 1970-06       
  JP45002642 1970-09       


Other Abstract Info: CHEMABS 088(06)039735K

Other References:
  • Duffie et al., "Solar Heat Exchangers," Chemical Engineering Progress (vol. 56, No. 7), July 1960, pp. 63-67.


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